DOSAGE OF THE MAMMALIAN HEART BY CHLOROFORM 91 
III. 300 mgrms. CHC1 3 per Litre of Modified Ringer's Solution 
(CHCl^ in "03 per cent, dilution) 
No. of Heart 
Quantity of 
CHCl 3 solution 
perfused 
Duration of 
flow 
A. beat 
V. beat 
Recovery 
Heart 23: — 
UDb. I ... 
5 2 C C. 
I mi n. 
8 sees. 
Stopped within 
30 sees. 
Stopped within 
50 sees. 
Full. V. in 3 mins. 
Obs. 2 ... 
155 c.c. 
3 mins. 
As before 
As before 
Full. V. in 4. mins. 
Obs. 3... 
260 c.c. 
5 mins. 
do. 
do. 
Full. V. in 2 mins. 25 
sees. 
Obs. 4 ... 
660 c.c. 
10 mins. 
do. 
do. 
Full. V. in 1 min. 15 
sees. , beat less regular 
Obs. 5 ... 
300 c.c. 
5 mins. 
Stopped within 
25 sees. 
Stopped in 
85 sees. 
Full. V. in i min. 35 
sees. 
Obs. 6... 
1,775 c - c - 
1 8 mins. 
Stopped 
Stopped 
Full. V. in 40 sees. 
Heart 2 6 : — 
Obs. 1 ... 
97 c.c. 
57 sees. 
Almost stopped 
Practically stopped 
Full 
Obs. 2 ... 
280 c.c. 
3 mins. 
Practically stopped 
do. 
Full. V. in 60 sees. 
Obs. 3... 
16 mins. 
Stopped 
Stopped 
Full ultimately 
